The Dynamic Characteristics Of Package Of Dangerous Goods In Road Transport

In the influential factors of causing damage of dangerous cargo package, vibration makes the biggest influence on package quality, therefore, this article focuses on the vibration impacts on the package of dangerous cargo. In the transport process, take the dangerous goods package and the transport system as two degrees of freedom system, therefore, the author applied dynamics analysis method, set up two degrees of freedom system vibration model, find out the two degrees of freedom system in external stochastic excitation in package produced under the response acceleration motion equation with time, power spectrum density function and response acceleration mean.In addition, the randomness of roads will cause the random vibration incentive package, causing the randomness of the response acceleration package, which produce the response acceleration amplitude with the change of time can be summed up in counting stochastic process, the random vibration during transportation can see as a result of the impact of the following incentive. Therefore, based on the concept of generalized impact load and the assumption of the impact load meet poisson stochastic process, if the limits of pieces of the inner packing has given, namely, the acceleration response value given product fragility, which can obtain the definition of transport package reliability. Then think of the acceleration of the inner packing with time history response accord with gaussian random process, available in the random vibration theory about structure damage analysis method, the calculation formula of packaging dynamic reliability based on the above definition type.Finally, analysis the random vibration and the reliability relationship of dangerous goods package through examples. From calculation the example in this passage, a reasonable and effective way is to reduce the vibration time of the inner parts.